Apparatus for constructing concrete floors and walls.



W.'. L.- CHURCH. APPARATUS FOR-CONSTRUCTING'CONCRETE FLOORS AND WALLS. APPLICATION FILE D JuNE'u. 1918.

1,293,036. Patented Feb. 4, 1919.

- a jz ia'ai wzfiwm WILLIAM L. CHURCH, OF NEWTON, MASSACHUSETTSASSIGNOR TO THE UNI-FORM *1 s'ra'rns PATENT OFFICE.

COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

APPARATUS FOR CONSTRUCTING CONCRETE FLOORS AND WALLS.

To'aZZ whom itmay concern.-

. Be it known that I, "WILLIAM. L. CHURCH, a citizen of the United States, and a resident of Newton, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Apparatus for Constructing Concrete Floors and VValls,of

which the following is a specification.

My invention relates to apparatus for constructing Concrete floors and walls and its'objects are to improve and simplify the same in the manner hereinafter set forth.

Apparatus of the general type described herein has been set forth in detail in .the application of N. F. Ambursen, Serial No.

229,168, filed April 17, 1918, and the claims of the present case are directed to certain modifications thereof in the nature of simplifications and improvements. In the drawings which accompany and form a part of this specification-l- I --};Figure 1 is a horizontal section of my member hereinafter improved apparatus showing the use thereof for constructing 'a single-rib wall. Fig. 2 is a vertical section showing'the arrangement of my, apparatus for. molding a reinforced concrete floor having reinforced conoreteribsformed integral therewith. Fig.

apparatus arranged for constructing. a flat slab floor. Fig. 4 is a fragmentary sec-f tional view showing in a somewhat exaggerated manner the use of the gap-stopping form and channel. Fig. 5 is an end view on an enlarged scale of said gap-stopping member. Fig. 6 is a similar view of otherv form of gap-stepping member. Fig. 7 is avertical section taken on the line 7 -7 of Fig. L and showing the use of said gapstopplng member between two ad acent forms. Fig. 8 is a perspective new of a detail of construction.

In the particular drawings selected for more fully disclosingmy invention, 1, 1 represent support members for the metallic forms 2, 2, saidsupport members belng shown in the present instance as metallic channels. In constructing a wall the channels are arranged vertically and are spaced apart, a form 2 being arranged between each pair of adjacent channels. The forms are provided with piano surfaces and their ends terminate in flanges '3 each of which described between a- Specification of Letters Patent. i Patented Fb 4, 1919, Application filed .Tune 27. 1915. Serial no. M2321.

the headed'bolts 7 passing through the web of each channel 1 and which extendbeyond the latter and abut the flanges 5 aforesaid of the side members of the for1ns.'a wing nut 8 being threaded to the outer end of said bolt to hold said buttons in position. In order to prevent the forms from moving inwardly before the concrete is poured, I provide a clip 9 arranged to take over the inwardly extending flanges 5 of the forms; and rest against the outer surface of the] webs of the channels.

As shown in Fig. 2 thelaterally-spaced longitudinal reinforcing members 11 and 12 are suitably supported in the slab portion and in the ribs of the floor respectively.

In Fig. 3 thelon'gitudinal reinforcing mem bers are indicated at 13.

It has been found that the sheet-metal forms "2 become "somewhat battered in use and do not "always make'tight joints with each other or with the channels. To overcome this defect I provide a gap-stopping member consisting, as shown in Fig. 5 at about twice'its actual size, of a thin sheet of metal reve'rsely bent to form abody portion 14, the upper ends of each half of which terminate preferably in the cap portions 15, 15 which may b'e'slightly curved-asindicated to prevent their extremities from being forced out of contact with the forms and: channels with which they are in contact. The body portion is adapted to 'fit into any gap that may be left between the concrete forms and the channels as shownin Fig. 4, or between two contiguous formsas shown in Fig. 7. the elasticity of the material of which it is made insuring atight fit. The cap members rest respectively on ing outwardly with respect to the channels channels are supported on suitable false' work lndicated at'lO and transverse and the forms and channels, or on two contiguous forms, and insure practically waterproof joints. I a

In Fig. 6 the body portion 16 of the gapstopping member consists of a single piece provided at its upper end with curved cap members 15', 1 5.

It will be understood however that the gapstopping members need not be made of metal and that paper or any other.suitable mate. rial may be used for this purpose.

It is highlydesirable in floor construction that the flanges 3.and the side members 4: of

the'forms should each make an acute angle with the surface of the form so that each side member will be angularly arranged ou's.

With'respect to the flange of its conti channel and each end flange 3 will m e an angle with the flange-of its contiguous form,-

so 'that'space's progressivelv increasing in width downwardly will be formed. The

- surface of the inner ends'of the flanges-or,

surface of each plane form is flush with one of the surfaces of the channels, either the the outer surface of the .web, and the sides of the forms make contact with the flanges .at the upper portion thereof, as clearly shown in Figs. 2 and 3. If the joint is not crete floors and walls 'a form having a plane surface, end flanges integral therewith, and

watertight a certain amount ofseepage will" occur and unless the parts are designed to prevent the cement mortar from collecting in the space between the sides and the flanges of the channels or between the end flanges 3 of two adj acent'forrns, a bond will a be formed between these members which will increase the diiiiculty of removing the forms afterthe concrete has hardened; By arranging the sides andflanges of the forms angularly in the manner above set forth all of such bond is' danger of the formation eliminated.

. Having thus described illustrative emi bodiments of my invention without however limiting the same thereto what I claim and desire to secure by-Letters Patent is:

-1. In an apparatus for constructing consides each making an acuteangle with said surface.

2. In an apparatus for constructing concrete'floors and walls, a form having a plane surface, end flanges" and sides, said flanges. and'sides each making an acute angle wi.th.

width downwardly is forme gap between each crete floors, laterally-spaced channels plane forms arranged between each pair on adjacent channels, saidforms each having the upper portion of itsjsides in contact with sald channels, the surface of each "of said forms being flushjwith one of the; .s urfaces of the contiguous channels and the sides thereof being arranged an larly with re:

spect to said flanges where ya space p'ro' gressively' increasing in width downwardly is formed between each said side and the. flange of the contiguous channel.

5. 'In an apparatus for constructing'con crete floors, laterally-spaced channels, Plans forms arranged between each pair of adjacent channels, said forms each having the upper portion of its ends, in, contact with 'the ad acent forms, the surface of each form being flushwith' the surface of the adjacent forms and the vends thereofbeing arranged angularly with respect fto 'saidsurface whereby a space progressivel increasing in 6; a In an I apparatus .for constructing walls, laterallyspaced channels, plane form's placed between each pair of adjacent chan- I nels, means for preventing said forms from moving outwardly With respect to said V a between. each pair of adjacent ends.

channels, andbndpiece, detachable clips" and to cooperate with saidchannels for preventing said formskfrom moving inwardly.

7. In an apparatusfor constructing concrete floors, laterally spaced channels, plane forms placed between each pair 'of adjacent channels and abutting'the flanges of the same and flexible means for bridgingthe form and its adjacent channel, p r 8. Apparatus for constructing concrete each arranged to over a portion of a form floors comprising laterallysspaced channels,

plane forms placed between. each pair of adjacent-channels and abutting the flanges of the same, and gap-stopping members eachhaving ,a body portion'arranged to fit into the gap between each form and its adjacent channeland a two-part cap resting on said form and channel.

9. Apparatus for. constructing concrete floors comprising laterally-spaced channels, planeforms' placed between each pair of adjacent channels and abutting the flanges of the same and gap-stopping members each having a body portion arranged to fit into the gap between each pair of adjacent forms and a two-part cap resting on the surface of said forms.

In testimony whereof. I have hereunto subscribed my name this llth day of June,

Luau L. or 

